Metadata

Name Intellectual disability (intell_dz)
Category Psychiatric
Sex
Adult Yes
UUID 88099402-ca17-4e92-9da5-0555c86941e7
Definition Subnormal intellectual functioning which originates during the developmental period. This has multiple potential etiologies, including genetic defects and perinatal insults. Intelligence quotient (IQ) scores are commonly used to determine whether an individual has an intellectual disability. IQ scores between 70 and 79 are in the borderline range. Scores below 67 are in the disabled range.

Ontologies

Disease Ontology (DOID) DOID_1059
MeSH D008607
SNOMED-CT 110359009

Key Summary Statistics

Cases from any source

Total 557
Female (%) 220 (39%)
Male (%) 337 (61%)

Year first recorded

intell_dz year of first event

Cases linked in all UK Biobank sources

Cross-source concordance

Vertical bars correspond to number of cases per source/intersection; horizontal bars to left correspond to total number of cases per source.

Cross-sourced intell_dz cases

Incidence & prevalence

Sex and age-stratified incidence and prevalence of intell_dz

Baseline prevalence stratified by sex

Female 2.95 (1.79,4.1)
Male 6.16 (4.34,7.98)

Incidence stratified by sex

Female 0.49 (0.31,0.67)
Male 0.65 (0.42,0.88)

Incidence stratified by age

Ages 40-44 0.91 (0.31,1.5)
Ages 45-49 0.89 (0.39,1.39)
Ages 50-54 0.7 (0.28,1.11)
Ages 55-59 0.47 (0.16,0.77)
Ages 60-64 0.38 (0.15,0.62)
Ages 65-69 0.4 (0.12,0.68)

Period prevalence

Methods

Comparison with general population

Sex-standardised prevalence from CALIBER study (Kuan et al. 2019)

CALIBER and UKB intell_dz prevalence comparison for multiple age groups

Population Ages 40-49 Ages 50-59 Ages 60-69
UK Biobank 17 (14,22) 12 (10,16) 4 (3,6)
CALIBER 70 (68,72) 66 (63,68) 53 (50,55)

Stratified by age and Townsend deprivation status

Deprivation status Ages 40-49 Ages 50-59 Ages 60-69
Least deprived 3(0,10) 2(0,7) 1(0,4)
Low 9(3,19) 3(1,9) 1(0,4)
Medium 6(2,14) 7(3,13) 3(1,6)
High 13(6,23) 10(5,17) 4(2,9)
Most deprived 46(34,61) 38(28,50) 14(8,21)

Stratified by age and country

Country Ages 40-49 Ages 50-59 Ages 60-69
England 18(14,24) 12(9,15) 4(3,6)
Scotland 10(3,24) 18(10,29) 8(3,15)
Wales 17(6,40) 11(4,25) 1(0,8)

Definition

UK Biobank field id Description Code Value
41202 Diagnoses - main ICD10 F70 Mild mental retardation
41202 Diagnoses - main ICD10 F71 Moderate mental retardation
41202 Diagnoses - main ICD10 F72 Severe mental retardation
41202 Diagnoses - main ICD10 F73 Profound mental retardation
41202 Diagnoses - main ICD10 F78 Other mental retardation
41202 Diagnoses - main ICD10 F79 Unspecified mental retardation
41202 Diagnoses - main ICD10 F81.9 Developmental disorder of scholastic skills, unspecified
41204 Diagnoses - secondary ICD10 F70 Mild mental retardation
41204 Diagnoses - secondary ICD10 F71 Moderate mental retardation
41204 Diagnoses - secondary ICD10 F72 Severe mental retardation
41204 Diagnoses - secondary ICD10 F73 Profound mental retardation
41204 Diagnoses - secondary ICD10 F78 Other mental retardation
41204 Diagnoses - secondary ICD10 F79 Unspecified mental retardation
41204 Diagnoses - secondary ICD10 F81.9 Developmental disorder of scholastic skills, unspecified
40001 Underlying (primary) cause of death: ICD10 F70 Mild mental retardation
40001 Underlying (primary) cause of death: ICD10 F71 Moderate mental retardation
40001 Underlying (primary) cause of death: ICD10 F72 Severe mental retardation
40001 Underlying (primary) cause of death: ICD10 F73 Profound mental retardation
40001 Underlying (primary) cause of death: ICD10 F78 Other mental retardation
40001 Underlying (primary) cause of death: ICD10 F79 Unspecified mental retardation
40001 Underlying (primary) cause of death: ICD10 F81.9 Developmental disorder of scholastic skills, unspecified
40002 Contributory (secondary) causes of death: ICD10 F70 Mild mental retardation
40002 Contributory (secondary) causes of death: ICD10 F71 Moderate mental retardation
40002 Contributory (secondary) causes of death: ICD10 F72 Severe mental retardation
40002 Contributory (secondary) causes of death: ICD10 F73 Profound mental retardation
40002 Contributory (secondary) causes of death: ICD10 F78 Other mental retardation
40002 Contributory (secondary) causes of death: ICD10 F79 Unspecified mental retardation
40002 Contributory (secondary) causes of death: ICD10 F81.9 Developmental disorder of scholastic skills, unspecified
42040 GP clinical event records 918e.00 On learning disability register
42040 GP clinical event records 94Z9.00 Preferred place of death: learning disability unit
42040 GP clinical event records 9HB0.00 Learning disabilities health action plan declined
42040 GP clinical event records 9HB1.00 Learning disabilities health action plan offered
42040 GP clinical event records 9HB2.00 Learning disabilities health action plan reviewed
42040 GP clinical event records 9HB3.00 Learning disabilities health assessment
42040 GP clinical event records 9HB4.00 Learning disabilities health action plan completed
42040 GP clinical event records 9HB5.00 Learning disabilities annual health assessment
42040 GP clinical event records 9HB6.00 Learning disabilities annual health assessment declined
42040 GP clinical event records 9HB6.11 Learning disabilities annual health check declined
42040 GP clinical event records 9HB7.00 Did not attend learning disabilities annual health assessmnt
42040 GP clinical event records 9HB7.11 Did not attend learning disabilities annual health check
42040 GP clinical event records 9HB..00 Learning disabilities administration status
42040 GP clinical event records 9mA0.00 Learning disability annual health check verbal invitation
42040 GP clinical event records 9mA1.00 Learning disability annual health check telephone invitation
42040 GP clinical event records 9mA2000 Learning disability annual health check invtation 1st letter
42040 GP clinical event records 9mA2100 Learning disability annual health check invtation 2nd letter
42040 GP clinical event records 9mA2200 Learning disability annual health check invtation 3rd letter
42040 GP clinical event records 9mA2.00 Learning disability annual health check letter invitation
42040 GP clinical event records 9mA..00 Learning disability annual health check invitation
42040 GP clinical event records E2F2.00 Other specific learning difficulty
42040 GP clinical event records E30..00 Mild mental retardation, IQ in range 50-70
42040 GP clinical event records E30..11 Educationally subnormal
42040 GP clinical event records E30..12 Feeble-minded
42040 GP clinical event records E30..13 Moron
42040 GP clinical event records E310.00 Moderate mental retardation, IQ in range 35-49
42040 GP clinical event records E310.11 Imbecile
42040 GP clinical event records E311.00 Severe mental retardation, IQ in range 20-34
42040 GP clinical event records E312.00 Profound mental retardation with IQ less than 20
42040 GP clinical event records E312.11 Idiocy
42040 GP clinical event records E31..00 Other specified mental retardation
42040 GP clinical event records E31z.00 Other specified mental retardation NOS
42040 GP clinical event records E3…00 Mental retardation
42040 GP clinical event records E3y..00 Other specified mental retardation
42040 GP clinical event records E3z..00 Mental retardation NOS
42040 GP clinical event records Eu70000 [X]Mld mental retard with statement no or min impairm behav
42040 GP clinical event records Eu70100 [X]Mld mental retard sig impairment behav req attent/treatmt
42040 GP clinical event records Eu70.00 [X]Mild mental retardation
42040 GP clinical event records Eu70.12 [X]Mild mental subnormality
42040 GP clinical event records Eu70y00 [X]Mild mental retardation, other impairments of behaviour
42040 GP clinical event records Eu70z00 [X]Mild mental retardation without mention impairment behav
42040 GP clinical event records Eu71000 [X]Mod mental retard with statement no or min impairm behav
42040 GP clinical event records Eu71100 [X]Mod mental retard sig impairment behav req attent/treatmt
42040 GP clinical event records Eu71.00 [X]Moderate mental retardation
42040 GP clinical event records Eu71.11 [X]Moderate mental subnormality
42040 GP clinical event records Eu71y00 [X]Mod retard oth behav impair
42040 GP clinical event records Eu71z00 [X]Mod mental retardation without mention impairment behav
42040 GP clinical event records Eu72000 [X]Sev mental retard with statement no or min impairm behav
42040 GP clinical event records Eu72100 [X]Sev mental retard sig impairment behav req attent/treatmt
42040 GP clinical event records Eu72.00 [X]Severe mental retardation
42040 GP clinical event records Eu72.11 [X]Severe mental subnormality
42040 GP clinical event records Eu72y00 [X]Severe mental retardation, other impairments of behaviour
42040 GP clinical event records Eu72z00 [X]Sev mental retardation without mention impairment behav
42040 GP clinical event records Eu73000 [X]Profound ment retrd wth statement no or min impairm behav
42040 GP clinical event records Eu73100 [X]Profound ment retard sig impairmnt behav req attent/treat
42040 GP clinical event records Eu73.00 [X]Profound mental retardation
42040 GP clinical event records Eu73.11 [X]Profound mental subnormality
42040 GP clinical event records Eu73y00 [X]Profound mental retardation, other impairments of behavr
42040 GP clinical event records Eu73z00 [X]Prfnd mental retardation without mention impairment behav
42040 GP clinical event records Eu7..00 [X]Mental retardation
42040 GP clinical event records Eu7y000 [X]Oth mental retard with statement no or min impairm behav
42040 GP clinical event records Eu7y100 [X]Oth mental retard sig impairment behav req attent/treatmt
42040 GP clinical event records Eu7y.00 [X]Other mental retardation
42040 GP clinical event records Eu7yy00 [X]Other mental retardation, other impairments of behaviour
42040 GP clinical event records Eu7yz00 [X]Other mental retardation without mention impairment behav
42040 GP clinical event records Eu7z000 [X]Unsp mental retard with statement no or min impairm behav
42040 GP clinical event records Eu7z100 [X]Unsp mentl retard sig impairment behav req attent/treatmt
42040 GP clinical event records Eu7z.00 [X]Unspecified mental retardation
42040 GP clinical event records Eu7z.11 [X]Mental deficiency NOS
42040 GP clinical event records Eu7z.12 [X]Mental subnormality NOS
42040 GP clinical event records Eu7zy00 [X]Unspecified mental retardatn, other impairments of behav
42040 GP clinical event records Eu7zz00 [X]Unsp mental retardation without mention impairment behav
42040 GP clinical event records Eu81400 [X]Moderate learning disability
42040 GP clinical event records Eu81500 [X]Severe learning disability
42040 GP clinical event records Eu81600 [X]Mild learning disability
42040 GP clinical event records Eu81700 [X]Profound learning disability
42040 GP clinical event records Eu81800 [X]Specific learning disability
42040 GP clinical event records Eu81z00 [X]Developmental disorder of scholastic skills, unspecified
42040 GP clinical event records Eu81z11 [X]Learning disability NOS
42040 GP clinical event records Eu81z12 [X]Learning disorder NOS
42040 GP clinical event records Eu81z13 [X]Learn acquisition disab NOS
42040 GP clinical event records Eu84112 [X]Mental retardation with autistic features
42040 GP clinical event records Eu84400 [X]Overactive disorder assoc mental retard/stereotype movts
42040 GP clinical event records XaW0V Learning disability annual health check invitation second letter
42040 GP clinical event records XaJsd Learning disabilities health action plan completed
42040 GP clinical event records XaR7T Learning disability annual health check verbal invitation
42040 GP clinical event records XaR8N Learning disability annual health check letter invitation
42040 GP clinical event records XaQnv Learning disabilities annual health assessment declined
42040 GP clinical event records E31.. Other specified mental retardation
42040 GP clinical event records XaJW8 Learning disabilities health action plan offered
42040 GP clinical event records XaJmb Learning disabilities health assessment
42040 GP clinical event records XaQnw Did not attend learning disabilities annual health assessment
42040 GP clinical event records XE2a3 Mild mental retardation, IQ in range 50-70
42040 GP clinical event records XaJW9 Learning disabilities health action plan declined
42040 GP clinical event records XaW0U Learning disability annual health check invitation first letter
42040 GP clinical event records XaW0W Learning disability annual health check invitation third letter
42040 GP clinical event records XaR7U Learning disability annual health check telephone invitation
42040 GP clinical event records XaJW7 Learning disabilities administration status
42040 GP clinical event records XaJWA Learning disabilities health action plan reviewed
42040 GP clinical event records XaR7S Learning disability annual health check invitation
42040 GP clinical event records XaL3Q Learning disabilities annual health assessment
42040 GP clinical event records XaKYb On learning disability register
42040 GP clinical event records XE1a2 [X]Unspecified mental retardation
42040 GP clinical event records XaR4q Preferred place of death: learning disability unit